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4 Sheets-Sheet 1.

(No Model.)

- A. EBERLE.

GATE FOR ELEVATORS-0R BRIDGES. No. 438,991. Patented Oct. 21, 1890.

(No Model.) 4 Sh'eets--Sheet 2.

A. EBERLE.

GATE FOR ELEVATORS 0R BRIDGES. I No. 438,991. Patented Oct. 21, 1890.

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(No Modei.) 4 Sheets-Sheet 3.

A. EBBRLE.

GATE FOR ELEVATORS 0R BRIDGES.

No. 438,991. Patented Oct. 21, 1890.

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(No Model.) 4 Sheets -Sheet 4.

A. BB '3. GATE FOR ELE'VA 0R BRIDGES.

No. 438,991. Patented Oct. 21, 1890.

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UNITED STATES ATENT OFFICE.

ADAM EBERLE, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO GEORGE M. ILLINGWVORTH, OF SAME PLACE.

GATE FOR ELEVATORS OR BRIDGES.

SPECIFICATION forming part of Letters Patent No. 438,991, dated October 21, 1890.

Application filed May 27, 1890. Serial No. 353,393. (No model.)

To all whom it may concern:

Be it known that I, ADAM EBERLE, a citizen of the United States, residing at Chicago, Illinois, have invented certain new and useful Improvements in Gates for Elevators or 1lj3 ridges, of which the following is a specificaion.

My invention relates to the class of gates which are used as a guard against accident at the elevator-shaft of warehouses or the approaches of bridges, but is especially to be used as an elevator-guard, which application I will more particularly describe; and the object of my invention is to provide a gate that shall be ornamental as well as substantial, and the working mechanisms of which shall be automatically operated to open or close the gates by certain mechanical devices upon the elevator-car, by which the conductor at will may cause a gate to open upon the approach of the car to the floor upon which the aforesaid gate is situated, and also to close the gates after the car has passed said floor either in an upward or a downward course of its travel.

Another feature of my improvement is that the operating parts are concealed beneath the flooring, and in consequence take up no valuable room and do not present an unsightly appearance.

I have shown my improved gate as applied to guard against accident at the shaft of a freight-elevator; but the same construction may be applied to the approach of a drawbridge, as clearly shown in Figs. 5 and 6.

In the accompanying drawings, Figure 1 is a plan view showing the gate extended before the doorway of the elevator-shaft, the mechanisms for operating the gate, and the elevator-car in position to operate upon said mechanisms to cause the gate to be withdrawn from the doorway of the shaft. Fig. 2 is a side elevation of parts shown in Fig. 1, looking in the direction indicated by the arrow 2, Fig. 1. Fig. 3 is a central vertical section taken on line 3 3, Fig. 2, looking in the direction indicated by the arrow 3. Fig. at is a sectional detail of the operating appliance upon the elevator-car, the normal position being shown in full lines, and the dotted lines indicate the position assumed when the passage of the car is desired to cause the opening or closing of a gate. Fig. 5 is a plan view of a gate as applied to the approach of a draw-bridge.

Fig. 6 is a sectional view taken on line 6 6 of Fig. 5, looking in the direction indicated by the arrow 6.

In the accompanying dra win gs,A represents the floor-line.

B is a rail the upper surface of which is cl, which also carries one member of a pair of miter-gears c, the other member being upon a shaft F, which also carries at its extreme ends gears f, whose teeth intermesh with the teeth of racks G, which racks travel in boxes G. To the upper ends of racks G are pivotally secured linked rails H. The opposite ends of these rails are rigidly secured to the post 0, said linked rails and racks furnishing the connecting means whereby posts 0 are returned to their closed position. h are provided with anti-friction rollers h, upon which the linked rails 11 rest. Studs I are provided with conical ends, that seat themselves in a concave recess in the ends of studs I, thus forming a rigid guard when both members of the gate are in contact. Shaft E also carries one of a pair of mitergears t', the other member being secured to an upright shaft J. At the extreme ends of shaft J are secured, respectively, one mem- 9o ber of a pair of miter-gears J J. The fellow member of the miter-gear J is secured to a short shaft j, that carries on its opposite end a gear j. Shaft K likewise carries the fellow member of miter-gears J and gear k. Gears k and j are the initial point of operation of the mechanism for opening and closing the gate; but before describing the complete op eration of the devices applied to the gate, it

is necessary to describe the parts shown in I00 Fig. 4.

By referring to the aforesaid figures it will The strand passing over 65 Standards 80 35 way of its length.

be seen that a vertical rack L, secured to a movable block L, is secured in a way at the side of the floor of the elevator-car. Levers Z are pivotally secured to the car-floor, one

end of said levers being slotted, as at Z, and

receiving a pin Z upon abracket 1", said brackets being secured to the block L. The opposite ends of leversl are secured to an operating-cable a, said cable passing beneath IO the fioor and to the opposite side of the car,

and is then carried up over a sheave and applied to a foot-treadle T, as clearly shown in the drawings.

Midway of the block L is secured the end of a spring N, the opposite end of which is secured to the floor of the elevator-car and retains the block L in its normal posit-ion.

In operation, supposing the car to be on its upward travel and the gate being closed, to

open the gate the conductor has but to press upon the foot-treadle before the floor of the car has passed the gear j, and through the action of levers Z, caused by the retraction of cable a, block L will be thrown out to a point where the teeth of rack L will intermesh with the teeth of gear j, causing the rotation of shafty until the rack L has passed the gear j The rotation of shaft j through the miter-gear connections transmits a rotary movement to shaft J, which in turn rotates through miterrotates the gears ficausing the racks G to be drawn downwardly, and carrying with them the linked rails H. To reverse the action of the gate, the car-floor having passed the gear 3, the conductor will cause the rack L to engage with the gear 7c, and through a reverse movement of the same parts just described the gate will be returned to its closed position.

A gate thus constructed may be made attractive, and at the same time very substantial, without a loss of valuable room.

I claim 1. A gate or guard for elevator hatchways or bridges, provided with posts and secured to a crossed cable, and connecting parts and means for operating the cable to cause the posts to approach toward or recede from each other, substantially as described.

2. A gate or guard for elevator hatchways or bridges, provided with posts having interlocking studs and seen red to a crossed cable, and connecting parts and means for operating the cable to cause said posts to travel upon a track in opposite directions, whereby to bar or clear the passage, substantially as described.

3. A gate or guard for elevator hatchways or bridges, provided with posts having interlocking studs and secured to a crossed cable, linked rails connected to said posts and adapted to be engaged by bars having operatingracks, whereby to cause said posts to travel upon a track, substantially as shown and described.

4. A gate or guard for elevator hatchways 0r bridges, provided with posts having interlocking studs and secured to a crossed cable, linked rails connected to said posts and adapt ed to be engaged by bars having operatingracks, whereby to cause said posts to travel upon a track, and mechanical devices applied to an elevator-car, substantially as shown and described.

5. A gate or guard for elevator hatchways or bridges, provided with posts having interlocking studs and secured to a crossed cable, linked rails connected to said posts and adapted to be engaged by bars having operatingracks, whereby to cause said posts to travel upon a track, and'niechanical devices applied to an elevator-car, substantially as described.

ADAM EBERLE.

Witnesses:

O. O. LINTHICUM, E. L. HUBER. 

